Concrete-block mold



' March 17,1925. I 1,530,447

J. c. WEATHERS CONCRETE BLOCK MQLD Filed Feb. '7, 1924 3 Sheets- Sheet 1 v glvwenfoz J. c. WEATHERS CONCRETE BLOCK MOLD March 1 7, 925.

Filed Feb. 7,- 1924 '3 Sheets-Sheet 2 L ag March 17, 1925.

.J. C. WEATHERS CONCRETE BLOCK MOLD Filed Feb; v, 1924 3 Sheets-Sheet 5 Q Q N\ ii Patented Mar. 17, 1925.

it-1t TEES SHELBY, nostri c'A'nomN'A'.

continents-BLOCK MOIiDL Application filed Febmary '7', 1924. :SeriaI' No: #691,229;

ToaZZ'who/mittmay: con-061m;

Be it known that I,.JtimUsCflVnA'rHERs, a citizen of the United-l-Stat'es,a-residing at Shelby, i-ntzhehcou-nty of'Gleveland and "State" of North Gsroliriadhavetinvented certain, new :rnsd. useful? Improvements 2 in Con- .--rete?l3loel Molds and- 1 do hereby declare the follow 11mg to" be a f-tull -olear, iand exact description of the l iiWention,- such, as will enable others skilledaimthe'art tonvliioh it :rwpertains: to: 1 ake :tHICl use the-same.

The intention;- proridesi-a mold :for. formin g bltldddll'g r uni ts suchas;

plastic materiahand which the safe hann'd-ling-tl-iereo-f.

@therc objects gandwadi-vanta gesiwill be app went. and suggest themselves as; the-nature -=oat the invent ion & understood.

.niesn-t of the; inwen-tioh .itr that in: mdaptrng the: saime. toimeet eds fiei'ent conditions and :reqi'urenarents ,iva-riousfohainges \Vh'ile the drawings: filliist-rate ah-ienrbodiis to boi understood in. I the term,- :ptopoittion: Land:- minor details of construct-low may-be vresortedvtowithout departing from the spiriti ofi theinvention. :Reterrin-g" to: the accompanying-dim wings ionizing: apant-103i: the wpplidation Figs-med is a tbpr'p'lsx-n vien ofi arm-old embodying the; invention,

:Fi gure: i side view thoneo t; Figure ism .\*'ie1\\1 :Slililllifl to. Figure: 1 having one. of the-separators-on paTtitwioiisren'ioved', whereby to v torinimblooleot increased 7 len 51th,;

Figure/.4. is an endtviiew of-themold,

Figure 5 iswan: :enlanged: sectional wiew on tlie.-'line-5 5 of Figured-5 Figure ti is a .detsail-perspeotive View of a: sideof: the:- mold Figure? isg-a detail: perspectizve View of one of the separators or -partitions.

Figure. 8 is 21- vertical. l'ongitudinalseotion on the line 8-8 ofFigure Sidooleing in the direction of the arrows, ap'arts of the core being broken away,

Figure 9 is aseetion'allview on-the line 9-4) of Figure"-8,.-

Figure 10 is a detail View of the core contractor and expander, and

Figure 11 is a detail sectional View on the line 1 1-1l of Figure-8.

Corresponding and like parts are referred blocks,- tiles; and sl absfrom concrete .or- [analogous seltsettin-g is' adjustable and embodies i-niterchsan'igealble ;parts and to insthe following; description and desig nzrtedin the -several;views of the drawings by like reference characters.

The nIold isflprefenably of rectangular form and comprises similar side pieces l and end: pi ecesz 2,1: the-side pieces" having plates 3 attached to opposite ends'and' projecting outwardly;therefrom to be engaged by C-HBtClXQS'll pivoted to' the end pieces '2, whereby to lrold thersi'de and end PlGCQS'W'lIQiI' assembled. A strip dis-attached: to-thewin ner side of the. parts 1 and is disposed intermediate the top and bottom edges thereof, said strip constituting; a rib,- the edgesof. which are bevel-ech- "l he rib- 5 results in providing,indentations in opposite ends-bi the: bloolewhiclr receive the. 'll'lOIlZEII or'other bonding. mater-idl when-the 1 blocksare positioned ,in a wall driri-ngthe-construction thereof; Gnrooves 61 are: formed i n the i-n'ner feces of {the side pieces 1- and -are adapted 1 toreceive theaends of separators or partitions 7. 1: In the; re-te'rable constructiont lts grooves 6 area un'itorinl-y 'SPflQ/Gdl'f thereby en- :a-blingg; the; mold to form lbloejks;-ot --1egnlar sine; rlrhonrever; whenablock length i required, it is ob ions that one or more oil the separators 7' ins be; omitted, .as indicated in. Figure 1 3: "Blue separators or partitions beingnlihe, it tollo ws that they are interchangeable i and the true otrthe-sideand end-pieces Elieend pieces QHaind-the' separators 7 are provided witl 1- openings 8 in coincident position i to receive cores 9, whereby the blocks when iiormeid are hollow orare provided-with en- 1 larged openings, this be' new of advantage in a building-unit otthe naturestated. The mold illustrated includes two eores' 9. Obviously-1 this is not-essentiahasthe number ot-omies lna/y'va-ry andwill-jdepen'd upon the size; otthein'old and the number of openings 'tobefior'med intheblock. l he' cores-and adjunctiveparts being. alike; a: detailed description of one will suflioe for a olearnnderstandingthereo t. The core is of oylindrical tormand is preferably constructed of sheetinetal rolled into cylindrical form and havingedge portions overlapped, as indicated inostelearly in Figures l: and 5. One ed-geportion ot the sheet metal blank or strip coinprisingthe core is formed into a roll 10 in which is fitted a rod 11 and the opposite edge portion is provided with extensions 12 which are bent inwardly about the end of the opposite overlapping end porsa-me is" jot-, increased separators or formed in the end pieces end to provide for a play incident: to

tion, and these extensions 12 are connected by means of a strip 13 which passes through the core and is soldered or otherwise at tached to the inner ends of the extensions 12, thereby forming a tie therefor and holding the overlapping edge portions of the sheet metal blank in close relation. The core is adapted to be contracted and expanded to facilitate the removal and to enable the same to be readily placed in position when assembling the mold. Clips 14 are attached to the inner side of the core a distance from therolled edge 10 and receive a rod 15 similar to the rod 11, both rods 11 and 15 extending through the core and beyond the ends thereof.

The core is adapted to be contracted and expanded by means of an appliance embodying similar bars 16 which are pivotally connected intermediate their ends, as indicated at 17.

the ends thereof. The projecting ends of the rods 11 and 15 are connected to the projecting ends of the bars a loose connection with the bars 16 at one contraction and expansion of the core. The bars 16 have a pivotal movement and in consequence of the central position of the pivot fastening 17, both ends of the bars have a like movement with the result that-the core 1S uniformly contracted and expanded throughout its length. An td1t1$t111g screw 18 disposed at one end of the pivoted bar- 16 is connected to one of the bars by means of a swivel joint 19 and has screw thread connection 20 at its opposite end with the other bar, and in consequence of this arrangement, rotation of the screw 18 efiects a pivotal movement of the bars 16 and a contraction or an expansion of the core according to the direction of rotation of the screw.

When the moldisassembled, the side and end pieces 1 and 2 are made secure by the fastening means 3 and 4, after which the partitions 7 are placed in position and receive the cores 9 which are passed through the coinciding openings 2 and separators 7. The mold thus assembled is placed upon a surface which forms a bottom therefor and the concrete or other material is filled into the mold and tamped the em and is struck or leveled by passing a straight edge over the top of the mold. After the material has set to render it safe to handle the blocks, the cores are contracted by operating the screws '18 and when sufficiently contracted are with- The bars 16 are. of a lengthto pass through the core and extend beyond 16, the rods havingv drawn from the mold by an endwise movethereby permitting removal of said ends and the side pieces, after which the separators or partitions 7 may be withdrawn. The construction is such as to admit of the mold being readily assembled, since the parts are not required to be placed in predetermined position, it being clear that the separators, aswell as the end and side pieces, are interchangeable.

What is claimed is:

1. A core for amold, the same consisting of sheet material formed into a cylinder, and means for contracting and expanding the core, the same consisting: of two bars pivoted intermediate their ends, and means applied to an end of the bars to separate or draw the same together.

2.- Acore for a moldadapted to be contracted and expanded, two bars pivoted intermediate their ends and disposed within the core, means connecting opposite ends of the bars to end portions of the core, means applied to an end of the bar to separate or draw the same together.

3. A core comprising sheet material bent into cylindrical form and having edge portions overlapped, a rod attachedto the edge and the inner edge portion, and a tie strip connecting the folded extensions.

5. A core comprising a blank terial formed into a. cylinder edge portions overlapped, the outer edge portion having extensions at opposite ends which are bent inwardly to engage about the inner edge portion, atie strip connect ing; the folded extensions.and'means within the c'ore'to effect-acontraction and an exp ansion thereof.

In testimonywhereof I in presence of sheet maand having affix my signature of two witnesses.

JULIUS C. WEATHERS.

\Vitnesses: I

FRANK L. "'HoYLn,

Bvnrnu l li ea'rrrnns.

llO 

